I am not a 737 man.....
But reading the above, its very apparent whats going on.
The 737 will autoland on sch. But boeing under no circumstances want airlines flying their a/c round with the intentions of carrying out a sch autoland, hence they have discouraged it within their manuals....and have even gone to the extreme as to say it will not work.
I am pretty sure there are still airlines further afield who would be daft enough to contemplate this if flying MEL.
Sounds a bit harsh I know, but there are a lot of 737's out there being flown by airlines ALL OVER the world. Some of them with not so flawless safety records!!
P.s. If its there, then yes you should know about it, could save your bacon one day!! Although I am sure the CAA/AAIB would love to hear about it......